Base Layers & Mid Layers

SunnySports.com offers a wide variety of base, mid layers & thermal underwear to be worn in any conditions. These undergarments are sweat-resistant, quick-dry, and durable. We carry tops and bottoms from high quality brands such as Under Armour, Terramar, and SmartWool. Wearing these performance underwear underneath your outfit ensures a comfortable and dry adventure in the outdoors. Whether you're looking for leggings, tights, thermals, or a layer to keep your torso warm and dry, we have what you are looking for.

Marmot ThermalClime Pro Tight for Women

SKU: MRMTPTW

  • Flat locked seams
  • Gusseted crotch
  • Moisture wicking
  • Quick drying

Your Price: $45.00
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Marmot ThermalClime Pro Boot Long Sleeve Crew for Men

SKU: MRMTPLCM

  • Flat locked seams
  • Recycled polyester
  • Polartec technology
  • Moisture wicking

Regular: $50.00 $17.05 (34%)

Your Price: $32.95
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Marmot ThermalClime Pro LS Crew for Women

SKU: MRMTPLSW

  • Quick drying
  • Moisture wicking
  • Stretch elastane
  • Flat lock seams

Regular: $50.00 $18.05 (36%)

Your Price: $31.95
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Marmot ThermalClime Sport Tight for Women

SKU: MRMTSTW

  • Flat locked seams
  • Gusseted crotch
  • Recycled polyester
  • Polartec power dry

Regular: $38.00 $13.05 (34%)

Your Price: $24.95
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Marmot Catalyst 3/4 Rev. Tight for Women

SKU: MRMC3RTW

  • Midweight, breathable
  • UPF 50
  • Quick drying and wicking
  • Reversible

Your Price: $65.00
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Marmot ThermalClime Sport SS Crew Shirt for Men

SKU: MRMTSSCM

  • Quick drying
  • Moisture wicking
  • Stretch elastane
  • Flat lock seams

Your Price: $35.00
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Regular: $60.00 $25.05 (42%)

Your Price: $34.95
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Mammut Go Dry Shortsleeve Baselayer T-Shirt for Women

SKU: MMTGDSSW

  • Light, stretch material with waffle backing
  • Contoured cut
  • Quick drying
  • Antimicrobial feature
  • Ultraviolet Protection Factor (UPF) 20+

Regular: $39.00 $16.05 (41%)

Starting at: $22.95
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Marmot ThermalClime Sport SS Crew for Women

SKU: MRMTSSCW

  • Quick drying
  • Moisture wicking
  • Water resistant elastane
  • Flat lock seams

Regular: $35.00 $12.05 (34%)

Your Price: $22.95
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Mammut Go Warm T-Shirt Baselayer for Women

SKU: MMTGWTW

  • Contoured cut
  • Extended back
  • 100% polyester microfiber
  • Merino wool and polyester mix
  • Antimicrobial feature

Regular: $60.00 $32.05 (53%)

Your Price: $27.95
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Regular: $60.00 $25.05 (42%)

Your Price: $34.95
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Marmot Windridge Short Sleeve Shirt for Men

SKU: MRMWSSM

  • Ultraviolet protection factor (UPF) 50
  • Knit, polyester fabric
  • Tag-free neckline
  • Flat-locked seams
  • Mesh panels

Regular: $30.00 $10.05 (34%)

Starting at: $19.95
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Marmot ThermalClime Pro Tight for Men

SKU: MRMTPTM

  • Flat locked seams
  • Gusseted crotch
  • Moisture wicking
  • Quick drying

Your Price: $45.00
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Marmot ThermalClime Pro Boot Tight for Men

SKU: MRMTPBTM

  • Flat locked seams
  • Gusseted crotch
  • Recycled polyester
  • Polartec technology

Your Price: $42.00
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Marmot Trail Breeze 3/4 Tight for Women X-Small Dark Steel

SKU: MRMB3TW

  • Polygiene technology finish
  • Ultraviolet protection factor 30
  • Mesh paneling
  • Compression fit
  • Coolmax interior gusset liner

Regular: $65.00 $40.05 (62%)

Your Price: $24.95
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Marmot ThermalClime Sport Tight for Men

SKU: MRMTSTM

  • Flat locked seams
  • Gusseted crotch
  • Moisture wicking
  • Quick drying

Your Price: $38.00
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Mammut Go Dry Baselayer Pants for Women

SKU: MMTGDPW

  • Stretch material with waffle backing
  • Contoured cut
  • Allows freedom of movement
  • Fast drying
  • Antimicrobial feature to avoid unpleasant odor

Regular: $49.00 $19.05 (39%)

Starting at: $29.95
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Mammut Go Warm Longsleeve Zip Baselayer for Women

SKU: MMTGWZW

  • Contoured cut
  • The extended back 
  • Zip with zip-store 
  • 100% polyester microfiber 
  • Merino wool and polyester mix 

Regular: $77.00 $32.05 (42%)

Your Price: $44.95
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